/*
 * AtomDescriptor.hpp
 *
 *  Created on: Feb 5, 2010
 *      Author: crueger
 */

#ifndef ATOMDESCRIPTOR_HPP_
#define ATOMDESCRIPTOR_HPP_

#include<vector>
#include<map>
#include "World.hpp"

class atom;

class AtomDescriptor
{
public:
  friend atom* World::getAtom(AtomDescriptor& descriptor);
  friend std::vector<atom*> World::getAllAtoms(AtomDescriptor& descriptor);

  AtomDescriptor();
  virtual ~AtomDescriptor();

protected:
  virtual atom* find()=0;
  virtual std::vector<atom*> findAll()=0;
  std::map<int,atom*>& getAtoms();
};

class AtomPredicateDescriptor : public AtomDescriptor{
public:
  AtomPredicateDescriptor();
  virtual ~AtomPredicateDescriptor();

protected:
  virtual atom *find();
  virtual std::vector<atom*> findAll();
  virtual bool predicate(std::pair<int,atom*>)=0;
};

#endif /* ATOMDESCRIPTOR_HPP_ */